Home / 1,284,490.06-1,770,915.90-1,105,128.70

Finding the Fourth Proportional to 1,284,490.06, 1,770,915.90 and 1,105,128.70

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Solution

The fourth proportional to 1,284,490.06, 1,770,915.90 and 1,105,128.70 is: 1,523,631.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,490.06 : 1,770,915.90 = 1,105,128.70 : x
  2. Step 2: Convert to fraction form
    1,284,490.06/1,770,915.90 = 1,105,128.70/x
  3. Step 3: Cross multiply
    1,284,490.06x = 1,770,915.90 × 1,105,128.70
  4. Step 4: Simplify right side
    1,284,490.06x = 1,957,089,986,376.33
  5. Step 5: Solve for x
    x = 1,957,089,986,376.33/1,284,490.06
  6. Step 6: Final answer
    x = 1,523,631.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.